Evaluation of the research version TMPA three-hourly 0.25° × 0.25° rainfall estimates over Oklahoma

Gabriele Villarini, Witold F. Krajewski

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79 Scopus citations

Abstract

This study involves the extensive evaluation of six years (January 1998-December 2003) of the research-version TMPA three-hourly 0.25° × 0.25° rainfall product over a pixel containing 23 rain gauges from the Micronet network in Oklahoma, United States. The network average rainfall is characterized by small (2%) error. The authors consider three seasons i.e. cold, warm, and hot, and the evaluation is based on scatterplots, comparison of the tail of the distributions, and different types of statistical measures of agreement, bias, disagreement, and categorical evaluation. Overall, the best agreement is for the hot season. This study reveals that the TMPA should be considered as a 100-minute accumulation product, with the accumulation starting between 90 and 30 minutes before its nominal time, depending on the season.

Original languageEnglish (US)
Article numberL05402
JournalGeophysical Research Letters
Volume34
Issue number5
DOIs
StatePublished - Mar 16 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • General Earth and Planetary Sciences

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